Hierarchical Hypersurface Modeling
IGIS '94 Proceedings of the International Workshop on Advanced Information Systems: Geographic Information Systems
Survey of semi-regular multiresolution models for interactive terrain rendering
The Visual Computer: International Journal of Computer Graphics
Log-polar height maps for multiple range image registration
Computer Vision and Image Understanding
A web-mapping system for real-time visualization of the global terrain
Computers & Geosciences
A review of log-polar imaging for visual perception in robotics
Robotics and Autonomous Systems
Four-triangles adaptive algorithms for RTIN terrain meshes
Mathematical and Computer Modelling: An International Journal
Multiresolution terrain modeling using level curve information
Journal of Computational and Applied Mathematics
A Novel Space Variant Image Representation
Journal of Mathematical Imaging and Vision
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A new digital elevation model (DEM) is presented for accurate surface representation in photogrammetric processing of stereo ground-based imagery. This model is named the continuative variable resolution DEM (cvrDEM). In contrast to traditional grid-based DEMs that have only one fixed resolution, this new model can provide resolutions that vary depending on the range represented in the ground-based imagery. Functions for deriving radial and angular resolutions from the cvrDEM have been derived, and a corresponding storage structure for the polar coordinates has been developed. Experimental results using publically available NASA Mars Exploration Rover 2003 imagery demonstrate the effectiveness of the cvrDEM model: It can significantly reduce storage space while fully maintaining the most useful level of mapping accuracy relevant to the range from the imaging station. A terrestrial laser scanning data set was also used to validate the effectiveness of the cvrDEM.